"People that go to college are different kind of people ... (more) disciplined ... smarter. They did better in high school."

They would have made more money even if they never went to college.

Riley says some college students don't get what they pay for because their professors have little incentive to teach.

"You think you're paying for them to be in the classroom with you, but every hour a professor spends in the classroom, he gets paid less. The incentives are all for more research."

The research is often on obscure topics for journals nobody reads.

Also, lots of people not suited for higher education get pushed into it. This doesn't do them good. They feel like failures when they don't graduate. Vedder said two out of five students entering four-year programs don't have a bachelor's degree after year six.

"Why do colleges accept (these students) in the first place?"

Because money comes with the student -- usually government-guaranteed loans.

"There are 80,000 bartenders in the United States with bachelor's degrees," Vedder said. He says that 17 percent of baggage porters and bellhops have a college degree, 15 percent of taxi and limo drivers. It's hard to pay off student loans with jobs like those. These days, many students graduate with big debts.

Entrepreneur Peter Thiel, who got rich helping to build good things like PayPal and Facebook, is so eager to wake people up to alternatives to college that he's paying students $100,000 each if they drop out of college and do something else, like start a business.

"We're asking nothing in return other than meetings so we make sure (they) work hard, and not be in school for two years," said Jim O'Neill, who runs the foundation.

For some reason, this upsets the left. A Slate.com writer called Thiel's grant a "nasty idea" that leads students into "halting their intellectual development ... maintaining a narrow-minded focus on getting rich."

But Darren Zhu, a grant winner who quit Yale for the $100,000, told me, "Building a start-up and learning the sort of hardships that are associated with building a company is a much better education path."

I agree. Much better. Zhu plans to start a biotech company.

For the record, I went to college. I got a BA in psychology from Princeton. But if I didn’t learn much. Well, I did learn from my seven roommates. I learned about poker, chasing women, etc. But I was bored by my professor’s tedious lectures. I think I succeeded in TV because the professors were so boring. I wanted to use video to make education better. I learned how to do that on the job, at a TV station in Portland, Oregon. Princeton didn’t help. I never took a journalism course. My business is filled with people who did not attend journalism school.

What puzzles is me is why the market doesn't punish colleges that don't serve their customers well. The opposite has happened: Tuitions have risen four times faster than inflation.

"There's a lot of bad information out there," Vedder replied. "We don't know ... if (students) learned anything" during their college years.

"Do kids learn anything at Harvard? People at Harvard tell us they do. ... They were bright when they entered Harvard, but do ... seniors know more than freshman? The literacy rate among college graduates is lower today than it was 15 or 20 year ago. It is kind of hard for people to respond in market fashion when you don't have full information."

Despite the scam, the Obama administration plans to increase the number of students getting Pell grants by 50 percent.

And even a darling of conservatives, New Jersey Gov. Chris Christie, says college is a must: "Graduating from high school is just the first step."

We need to wake people up.

John Stossel is host of "Stossel" on the Fox Business Network. The show airs Thursdays at 10 p.m. and midnight ET. It re-airs Fridays at 10 p.m., Saturdays at 9 p.m. and 12 midnight, and Sundays at 10 p.m. (all times eastern). He's also the author of "Give Me a Break" and of "Myth, Lies, and Downright Stupidity."